Postmark Usage Statistics

Websites using Postmark

Download Lead List

Get a list of 53,096 websites using Postmark which includes location information, hosting data, contact details, 33,349 currently live websites and 19,747 sites that used this technology previously.

Top 10k
Top 100k
Top 1m

Quantcast Top 10k
171 of 10,000


Quantcast Top 100k
966 of 100,000


BuiltWith Top Million
3,623 of 970,256


Entire Internet
33,349 of 377,445,943


Log in or Sign up for Free to see Postmark history back another year to June 2016. View plans for historical access back to August 2012.

Email delivery for web apps.

Categories: Email Hosting Providers · Transactional Email

Technology Won
SPF 7,024
DMARC 3,540

This table shows where Postmark are gaining/losing customers from within the technologies in the same sub-categories of Transactional Email. View the full report for more information regarding countries, states and where Postmark's customers come from.

Physical locations of businesses using Postmark.


Top 10,000 Sites
Top 100,000 Sites
Top 1 Million Sites

This chart shows the amount of websites within the top 10k, 100k, and 1 million sites groups that are categorized as being in the specific vertical.

Get access to data on 53,096 websites that have used Postmark. We know of 33,349 live websites using Postmark and an additional 19,747 sites that used Postmark historically

View Website List

Get a list of websites using Postmark

Pro Screenshot

Transactional Email


394,777 websites


36,540 websites


64,486 websites

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Browse groups of technologies that we track.